Besides basic strategies listed in the official rulebook, there are several other strategies which can be applied, many of which revolve around the tactics of fortification.

The method by which the players in the video play the game bears only a moderate resemblance to the actual game as described in the official rulebook.

It also administers the sport's official rulebook and coaching and officiating programs.

There is an official rulebook which is used in tournament play.

The official rulebook gives three basic strategy tips for the classic rules:

The official rulebook suggests variations to the game-play mechanics for "Risk experts," any or all of which can be used depending on player preference.

Football was introduced to Croatia by English expatriates in Rijeka and Županja in 1873; the official rulebook was recognised in 1896.

My official rulebook says a turkey gobbles, and therefore it falls outside our sphere of interest.

The official rulebook of Major League Baseball states in Rule 10.04:

Percival is credited with innovating the penalty for backchat as he regularly used to march teams for the offence before it was added to the official rulebook.